Mortar shield



N. E. CLEMENTSON Nov. 6, 1928.

MORTAR SHIELD Filed June 29, 1927 z she ts sneet 1 m m M M v M J M M m a WM Nov. 6, 1928.

N. E. CLEMENTSON MORTAR SHI'ELD Filed June 29, 1927 2 Sheets-Sheet 2 Patented Nov. 6, 1928.

NILS E. CLEMENTSON, OF CHICAGO, ILLINOIS.

' MORTAR SHIELD.

i Application filed June 29, 1927. Scrial No. 202,402.

This invention relates to a shield to be used in the construction of walls, partitions,

and the like, from hollow concrete blocks.

1 of order.

Among the objects of the invention is to obtain a shield by the use of which a unlform and determined thickness of mortar may belaid on the horizontal upper faces of the several vertical outer walls and inner partition walls of a hollow concrete block in a given course, and on the vertical faces of the ends of the outer walls and lnner partition walls of a block already in place in the course which is being laid on the given course above named. An additional object is toobtain a shield by the use of which, in the applying of mortar to the several faces above named, no mortar need be dropped or allowed to fall into the vertical spaces or recesses of the several blocks which are being built into the wall or partition. An addi-' tional object is to obtain a shield whichis simple in construction, the manipulation of which is readily understood, and which is easily operated. An additional object is to obtain a shield which ischeaply made, is durable, and not liable to break or get out In the drawing referred to Fig. l is a side elevation of a device embodying the in vention. h

Fig. 2 is an elevation taken on line 22 of Fig. 1, and viewed as indicated by arrows, ofthe vertical member of the construction illustrated in Fig. 1.

Fig. 3 is a top plan view of the horizontal member of the construction illustrated in showing the vertical member of shield in horizontal section.

Fig. 4; is a vertical 4+4 of Fig. 3, viewed as indicated by an Fig. 5 is an isometric perspective of a mortar shield embodying the invention.

Fig. 6 18 a cross section taken on line 66 of Fig. 5, viewed as ind cated by arrows; and

Fig. 7 is a fragmentary'perspective viewed from the rear,.sh0wing the grooves in the movable members of the shield.

A reference-character applied todesig nate a given part indicates said part throughout the several figures of the drawing wherever the same appears.

This mortar shieldcomprises a horizontal where the front face and with a flange on section taken on lineftion'al element, 8, which is' edge of said member and a vertical me'mber,.both said members being provided with flanges by means of which the shield is positionedclat orally on a concrete block of an already set course of blocks, and against a block which has been put in place in the course which is being laid; and both the horizontal and vertical members are provided with spaces through which mortar may be applied to the portions of the block which are exposed to view by said spaces. And the members of the shield which form the spaces are of substantially thethickness it is the layer of mortar which is applied therethro-ugh, and the flanges of said horizontal and vertical members extend to the plane of the exposed faces of said space forming members. r

1, 2 and 3 represent parallel elements of the horizontal member of the shield, and 4, (Fig. 3), represents an additional element, at one end of the horizontal member, which is illustrated as integral with the ends of the several parallel elements 1, 2 and'3. 5, 6, represent vertical flanges which extendat substantially right angles to the plane of elements 1, 2, 3 and 4. Flange 6 is preferably integral with element 4, and is soillustrated in Fig. i, and extends the entire length of the horizontal member of the shield. Said flange 6 is also, preferably, integral with a flange, hereinafter described, on the vertical member of the shield, and of the wall which is being built up is not desired to be pointed the flange 5 is also integral with element 4 I the vertical member. WVhere the front face of the wall which is being built up is to be pointed on the front face thereof the flange 5 is substantially of the same width as the elementhand is bevelled or inlined on the outer face thereof, as is illustrated at 7, Fig. 3, and an addinot integral with either flange 5 or with the flange of the vertical member, hereinafter designated and described; but which is movably joined to said flanges, is used. 9 represents the flange on the front edge of the vertical member. of the Shield, and 9 a similar flange on the rear vertial member. Flange 6 is illustrated as integral with the portion of flange 9 which extends below the plane of the horizontal member, and where the front face of the wall is not to be pointed the flange 5 may be integral with the ortion of flange 9 which extends belowsaid orizontal member Where* it is desired to point the front the shield is made longitudinally face of a Wall, member 8 is mounted on the flange 5, at one end, and at the other end on the portion or part of flange 9 which extends below the plane of the horizontal member. here member or element 8 is used the front face of flange 5 is inclined, as is illustrated by numeral 7, Fig. 3, and the front face of the portion or part of flange 9 which extends below the plane of the horizontal member is also inclined, as is illustrated by numeral 10 in said Fig. 3. The portion of flange 5 between the part thereof which is illustrated in Fig. 3 and the part of flange 9 which extends below the plane of the horizontal member of the device is cut away, and element 8 is substituted therefor, when the front of the wall is to be pointed. r

The vertical member of the shield co1nprises the parallel elements 11,12 and 13,

which are preferably integral with the elements 1, 2 and 3, at their adjacent ends. The upper ends of elements 11, 12 and 13 are, preferably, integral with element 14, of said vertical member. The height of mem bers 11, 12, and 13 is substantially the same as the height of theconcrete blocks which are being used to build up the wall or partition.

WVhere the front face of the wall is to be pointed the flange 9 is cut away, as on lines 15, 16 and 17, and the cut away portion or part is replaced by the element 18. When element 18 is'used the upper end, (desig nated by numeral 19) extends on to the upper end of flange 9, (designated by, numeral 20), and the meeting faces, 19, 20, are inclined, as is indicated by the numeral 21, Fig. 2. 22 represents what may be termed, although it is integral. with element 18 when of cast metal as is preferred, a cleat or bar, near the lower end of element 18, and extending over on to the part or portion of flange 9 which is adjacent thereto. The meeting faces ofelement 18 and flange 9 are inclined, as is indicated by the numeral 23, Fig. 2.

The element 8 is provided with slots, 24, 25, adjacent to its ends, and 26, 27, respectively, represent screws or bolts, which extend through sail slots and into flanges 5 and 9. Said element 8 is thus held closely to said flanges, at its ends, and between said ends the front face thereof is in the same plane, when in the position illustrated in Figs. 2 and 4, as the front face of said flanges; and when said element 8 is moved it. is retracted from said plane; but is at all times substantially parallel thereto, when sormoved.

The upper end, 19, of element '18, and cleat 22 are, respectively, provided with slots 28, 29, and 30, 31, respectively, represent screws or bolts which extend through said slots and into the flange 9. Said element 18 mortar after it has out disturbing the same.

is thus held closely to said flange 9, at its ends, and between said ends the front face thereof is in the same plane, when in the position illustrated in Figs. 2 and 4, as the front face of said flange; and when said element is moved longitudinally it is retracted from said plane; but is at all times parallel thereto. 3 1

The element 8 is provided with the groove 32 along and adjacent to the upper edge thereof, Fig. 4, (also indicated by broken.

lines in Figs. 1 and 3). The element 18 is provided with a similar groove along and adjacent to the front edge thereof, which is indicated by the numeral 33, with lead line to the broken perpendicular line parallel to the forward edge of said element, Fig. 1. Groove 33 extends from the lower end of the element '18 to a height substantially equal to the height of the concrete blocks which are being laid, that is, to the lower edge of element 14. H

Horizontal elements 1, 2 and 3 are bevelled or inclined at the edges, as are also elements 11, 12 and 13. These inclined faces are to permit the removal of. the shield from been spread between said parallel members or elements, and are indicated by the numeral 34.

The manner in which'the shield is used is: Elements 8 and 18 being in the position in which they are illustrated in the several figures, the horizontal member of the shield is laid on the horizontal upper face of a block in the course below the one which is being laid, and the vertical member thereof is moved into contact with the vertical face of a block in the course which is being laid, and which has already been put in place in said course. Mortar is then applied in the spaces between the elements 1, 2, 3, and between the outer ones of said elements and the upper edges of the'fianges 5 and 6, (where no pointing 0f the front face of the wall is desired), and where pointing is de sired the mortar is laid between the outer edge of element 1 and the upper edge of element 8, and into the groove 32. Mortar is also applied between the elements 11, 12 and 13, and between the outer edges of elements 11 and 13 and the forward edges of flanges 9 and 9. Where the vertical joint on the front of the Wall is to be pointed and the element 18 is built into the shield, mortar ris applied' between the outer edge of element 11 and the forward edge of element 18, and into the groove therein.

The elements 8 and 18, respectively, are then moved longitudinally and so retracted from the mortar in the grooves and the shield can be removed from the mortar with- The proper concrete block is then put in place in contact with the freshly applied mortar, and the same actions are repeated.

I claim: I

1. A mortar shield consisting of a horizontal and a vertical member respectively consisting of parallel elements and end elements joined to said parallel elements, to hold said parallel elements in'spaced relation, in combination With flanges joined to said end elements andat substantiallyright angles to said end and parallel elements, all arranged to obtain spaces in which mortar may be applied to determined faces of blocks which are being built into a wall.

2. A mortar shield consisting of a horizontal and, a vertical member respectively consisting of parallel elements and end elements joined to said parallel elements, to hold said parallel elements in spaced relation, in combination with flanges joined to said end-elements and at substantiallyright angles to said end and parallel elements, and additional members mounted on determined ones of said flanges, said additional members provided With longitudinally extending grooves, said parallel elements, flanges, addltional members and grooves all arranged to obtain spaces in which mortar may be applied to determined faces of blocks which are being built into a wall, and said additional members longitudinally movable, and means to retract them from said mortar When so moved in a determined direction. i

3. A mortar shield consisting of a horizontal and a vertical member respectively consisting of parallel elements and end ele- ,ments joined to said parallel elements, to

hold said parallel elements in spaced relation,- in combination With flanges joined to said end elements and at substantially right angles to said end and parallelelements, and additional members mounted on determined ones of said flanges and said additional members tending grooves, said parallel elements, flanges, additional members and grooves all arranged to obtain spaces in which mortar provided with longitudinally exa may be applied to determined faces of 

